Melanoma cancer symptoms

Written by Sun Ming Yue

Medical Oncology

Updated on September 27, 2024

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Once melanoma begins to transform cancerously, the tumor will gradually grow larger, and the melanocytic nevi on the skin will also exhibit unusual phenomena. If various colors or a deepening of color appears in the melanin on a patient's body, it might indicate the onset of malignant changes. If a patient develops melanoma, it is advisable for them to seek medical attention promptly for surgical treatment, as this can help prevent the progression to cancer.

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How long does it take for melanoma to progress to the late stage?

The time for melanoma to progress to an advanced stage is not fixed, and currently, the internal oncology community views melanoma as a highly malignant tumor that develops rapidly. Melanoma is a malignant tumor originating from melanocytes and can occur in multiple parts of the body, with the most common sites being the skin and mucous membranes, accounting for about 70%. Once diagnosed, patients with melanoma are still primarily considered for surgical treatment. For those who have undergone surgery, immunotherapy can be used for consolidation. For patients who are not candidates for surgery at the time of diagnosis, systemic treatments such as chemotherapy and immunotherapy are generally adopted to control the progression of the disease.

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What are the symptoms of subungual melanoma?

Subungual melanoma, clinically, displays different symptoms depending on the stage. In its early stages, subungual melanoma primarily manifests as changes in nail color, with some cases showing localized thickening of the nail. As the melanoma progresses, abnormal secretions such as bloody or serous fluids may appear under the nail, and the nail itself may become uneven. As the subungual melanoma invades surrounding tissues, symptoms such as swelling, pain, or bleeding in the localized fingernail may occur. In advanced stages, symptoms of metastatic sites, such as coughing, chest pain, and chest tightness from lung metastases, can also manifest.

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Medical Oncology

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Does melanoma develop quickly?

If melanoma is diagnosed, this disease must not be taken lightly. It is crucial to seek timely medical treatment and not miss the optimal treatment window, thus avoiding serious consequences. The progression of melanoma is very rapid, so once detected, it should be treated as soon as possible. This approach helps to control the spread of the disease and reduce further damage to the body. Melanoma easily causes pigmentation of the skin and can lead to localized breakdown and bleeding. Generally, if the treatment is not timely, ulcers and satellite lesions may develop, thus having a greater impact. Melanoma is also a disease that tends to metastasize easily. Patients may experience nausea, vomiting, affected appetite, weakness in the limbs, and it can also affect the liver, lungs, brain, and bones, causing symptoms including bone pain. Therefore, it is imperative to detect and treat this disease early to improve the body's healing rate.

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Is melanoma flat or raised?

Melanoma generally is not flat, also known as malignant melanoma, which is a highly malignant cancer originating from melanocytes, commonly occurring in the skin. Men over the age of 60 are a high-risk group, with the most commonly affected areas being the lower limbs and feet, followed by the trunk, head and neck, or upper limbs. Symptoms mainly include rapidly growing melanotic nodules. Initially, normal skin becomes heavily pigmented, or pigmented moles darken and increase in pigment. The skin lesions continually enlarge and harden, accompanied by itching and pain. The lesions of melanoma may be raised, patchy, or nodular, and some may even resemble cauliflower.

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The difference between melanoma and moles

Melanoma and moles are distinguishable; firstly, moles are generally smaller, while melanomas have a larger diameter. Secondly, the color of a mole is more uniform, whereas the color of a melanoma is inconsistent in depth. Furthermore, moles are typically symmetric in shape, while melanomas are asymmetric. Lastly, melanoma is a type of malignant tumor, whereas a mole is simply a skin condition.